43642879 has 6 divisors (see below), whose sum is σ = 50768304. Its totient is φ = 37408140.

The previous prime is 43642873. The next prime is 43642909. The reversal of 43642879 is 97824634.

It is not a de Polignac number, because 43642879 - 2⁵ = 43642847 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43642873) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 445287 + ... + 445384.

It is an arithmetic number, because the mean of its divisors is an integer number (8461384).

Almost surely, 2^43642879 is an apocalyptic number.

43642879 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

43642879 is a deficient number, since it is larger than the sum of its proper divisors (7125425).

43642879 is an equidigital number, since it uses as much as digits as its factorization.

43642879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890685 (or 890678 counting only the distinct ones).

The product of its digits is 290304, while the sum is 43.

The square root of 43642879 is about 6606.2757284267. The cubic root of 43642879 is about 352.0771154005.

It can be divided in two parts, 43642 and 879, that added together give a square (44521 = 211²).

The spelling of 43642879 in words is "forty-three million, six hundred forty-two thousand, eight hundred seventy-nine".